The London Times lists the Top 20 Best Movie Endings (click here for more details, but warning — SPOILER ALERTS abound).
Before you read on, keep in mind these aren’t necessarily all surprise movie endings a la "The Sixth Sense" and "The Usual Suspects". They are, however, movie endings that are, for one reason or another, memorable.
20. Se7en
David Fincher, 1995
19. The Blair Witch Project
Daniel Myrick, Eduardo Sanchez, 1999
18. Memento
Christopher Nolan, 2000
17. Planet of the Apes
Franklin J Schaffner, 1968
16. The Shawshank Redemption
Frank Darabont, 1994
15. Gone With the Wind
Victor Fleming, 1939
14. Doctor Strangelove
Stanley Kubrick, 1964
13. Les Diaboliques
Henri-Georges Clouzot, 1955
12. The Wizard of Oz
Victor Fleming, 1939
11. Thelma & Louise
Ridley Scott, 1991
10. The Sixth Sense
M. Night Shyamalan, 1999
9. The Usual Suspects
Bryan Singer, 1995
8. The Italian Job
Peter Collison, 1969
7. Some Like It Hot
Billy Wilder, 1959
6. Breakfast At Tiffany’s
Blake Edwards, 1961
5. Chinatown
Roman Polanski, 1974
4. E.T.: The Extra-Terrestrial
Steven Spielberg, 1982
3. Casablanca
Michael Curtiz, 1942
2. Butch Cassidy and the Sundance Kid
George Roy Hill, 1969
1. Carrie
Brian De Palma, 1976